/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { BaseMatcher } from '../BaseMatcher.js';
/**
 * Decorates another Matcher, retaining the behaviour but allowing tests
 * to be slightly more expressive.
 *
 * For example:  assertThat(cheese, equalTo(smelly))
 *          vs.  assertThat(cheese, is(equalTo(smelly)))
 */
export class Is extends BaseMatcher {
    constructor(matcher) {
        super();
        this.matcher = matcher;
    }
    matches(arg) {
        return this.matcher.matches(arg);
    }
    describeTo(description) {
        description.appendText("is ").appendDescriptionOf(this.matcher);
    }
    describeMismatch(item, mismatchDescription) {
        this.matcher.describeMismatch(item, mismatchDescription);
    }
    /**
     * Decorates another Matcher, retaining its behaviour, but allowing tests
     * to be slightly more expressive.
     * For example:
     * <pre>assertThat(cheese, is(equalTo(smelly)))</pre>
     * instead of:
     * <pre>assertThat(cheese, equalTo(smelly))</pre>
     *
     * @param <T>
     *     the matcher type.
     * @param matcher
     *     the matcher to wrap.
     * @return The matcher.
     */
    static is(matcher) {
        return new Is(matcher);
    }
}
